CanadaThe weather in December in Ottawa
It's cold in December in Ottawa with an average temperature of -3°C. Temperatures this month range from a low of -7°C to a high of 0°C. At night, you can expect temperatures between -15°C and -6°C.
Looking for sun? December isn’t a good month to be in Ottawa. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for Ottawa, Canada. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 17°C in 2015, Ottawa reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was -33°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of -41°C to a highest value of 8°C.
Precipitation and snowfall
In December, there is an average of 104 mm of precipitation, spread over 14 days. Of the total precipitation, about 37 cm falls as snow in December. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in December for Ottawa
Click on any day in December to get detailed info about the usual weather on that day in Ottawa. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| Ottawa | New York | |
|---|---|---|
| Average temperature | -3°C | 9°C |
| Max. temperature | 0°C | 12°C |
| Min. temperature | -15°C | -5°C |
| Total precipitation | 104 mm | 133 mm |
| Rainy days | 14 days | 17 days |
| Total snowfall | 37 cm | 9,7 cm |
| Snowy days | 16 days | 3 days |
Start of December
The month of December starts in Ottawa with really cold temps, averaging around -1°C during the day and nights dipping to about -8°C.
Mid December
By mid-December, daytime temps drop to around -3°C, with nights around -10°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of December
By the end of December, the average daytime temperature in Ottawa is around -5°C, while nighttime temps are about -12°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
Check out the climate of Ottawa for all months and discover the best travel time
Curious about the weather in other parts of Canada? Check out the climate and weather for spots like Vancouver, Toronto, Niagara Falls, or explore other destinations in Canada.
Temperature charts
These charts show the average temperatures in December in Ottawa, Canada. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in Ottawa
Temperature in December in Ottawa over the years
Precipitation charts
These charts show the average amount of precipitation in December in Ottawa, Canada. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in Ottawa
Total precipitation in December in Ottawa over the years
Daily Snowfall in December in Ottawa
Snowfall in December in Ottawa per year
Daily UV index in December in Ottawa
This chart shows the average daily UV index in December in Ottawa, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in Ottawa
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Average weather in Ottawa by month
Click on a month below to see detailed weather info for Ottawa. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.